JSFiddle - React, Tailwind, and code Playground

HTML

<div class="lang">
    <span>CS</span>
    <ul>
        <li><a href="#">SK</a></li>
        <li><a href="#">EN</a></li>
        <li><a href="#">DE</a></li>
    </ul>    
</div>
nejaký iný text

CSS

.lang {
    position: relative;
    top: 0;
    left: 0;
}
.lang span {
    cursor: pointer;
    font-weight: bold;
}
.lang ul {
    display: none;
    background: #ccc;
    position: absolute;
    margin: 0;
    padding: 0;
    width: 100px;
}
.lang:hover ul {
    display: block;
}